Gas Sensor
a technology of gas sensor and sensor body, which is applied in the field of gas sensor, can solve the problems of high power consumption, high power consumption is not desirable, and high power consumption, and achieves the effects of large measurement signal, high signal-noise ratio, and simple, economical and compact design
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[0022]A gas detector 1 has a circuit board 2 that acts as a substrate, an IR radiation source 3 attached to circuit board 2, and an IR detector 4 attached to circuit board 2. In addition, a reflector 5 is provided having a half-cylindrical reflective surface 6 that together with circuit board 2 encloses a measurement chamber 9 in which one or more gas concentrations are measured. Reflective surface 6 according to the present invention reflects radiation at least in the relevant infrared range, and can preferably be fashioned as a metallic layer or a metallic coating, or can be fashioned completely from metal.
[0023]IR radiation source 3, shown in detail in FIG. 2, has an IR lamp 10, e.g., a bulb or an IR LED, and has a small housing 12 that acts as a shielding device according to the present invention that only permits IR radiation to exit at a radiation angle a that is preferably 40° to 60°, e.g. 50°. IR radiation source 3 and IR detector 4 are situated close to cylindrical reflecti...
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